AN77835 - PSoC® 3 to PSoC 5LP Migration Guide | Cypress Semiconductor
AN77835 - PSoC® 3 to PSoC 5LP Migration Guide
PSoC 3 and PSoC 5LP devices are designed for easy migration of designs from PSoC 3 to PSoC 5LP. Although there are some differences such as the CPU cores, the programmable analog, programmable digital, programmable routing, pin functions, and other features are quite similar. Furthermore, the PSoC Creator IDE handles a lot of the migration issues for you, automatically. Often, migrating a PSoC Creator design is as simple as specifying a new part then rebuilding the project.